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Home >> Chevrolet >> 2009 >> HHR LT, 2.2 B, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.2L Or 2.4L - Introduction >> Repair Instructions >> Throttle Learn >> Throttle Learn >> With Scan Tool-Reset

With Scan Tool-Reset

  1. Ignition ON, engine OFF. With a scan tool, perform the Idle Learn Reset in Module Setup.
  2. Start the engine, monitor the TB Idle Airflow Compensation parameter. The TB Idle Airflow Compensation parameter value should equal 0 percent and the engine should be idling at a normal idle speed.
    • If the engine is not idling normally, proceed with the Learn portion of the diagnostic.
  3. Clear the DTCs and return to the diagnostic that referred you here.
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